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How can I cut a routing blockage in FE?

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Dear ALL:

I want to cut a routing blockage in one floorplan to make routing guides. For example, I dont have M5 cell routing blockage in a LEF hard block, I add this routing blockage at the top level, I have to cut some notches according to the pin shapes (if pins are on M5), then router can make M5 connections to these pins without DRC. How can I cut these notches on the added M5 routing blockage, this is more like a polygon operation, do Encounter have such db commands? I dont want to modify the LEF file (to add the M5 obstruction).

Thanks in advance!


Originally posted in cdnusers.org by eminemshow
Parents

  • The dbShape command debuted in 10.1 and dbGet didn't always expose the "boxes" field. Can you move to a newer version?

    If not, you'd need to write your own shape maniuplation commands and retrieve the box list with getObjFPlanBoxList.

    You may be better off adding the blockage shapes to the LEF (in which case you may not need to cut out around the pins because routers like NanoRoute can automatically access a pin covered with a blockage within a LEF).

    Thanks,
    Bob

     

Reply

  • The dbShape command debuted in 10.1 and dbGet didn't always expose the "boxes" field. Can you move to a newer version?

    If not, you'd need to write your own shape maniuplation commands and retrieve the box list with getObjFPlanBoxList.

    You may be better off adding the blockage shapes to the LEF (in which case you may not need to cut out around the pins because routers like NanoRoute can automatically access a pin covered with a blockage within a LEF).

    Thanks,
    Bob

     

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